wordpress Warning: mysqli_real_connect(): (HY000/2002) php7

Warning: mysqli_real_connect(): (HY000/2002): No such file or directory in

php7下面的wordpress报错：

解决：vim wp-config.php

将localhost改成下面的即可：

define('DB_HOST', '127.0.0.1');

When you specify localhost, the mysqli_real_connect() function tries to connect to your database through a Unix socket that it cannot find (hence the "no such file" error.) When you specify 127.0.0.1, it attempts to connect to your database using the default TCP port (typically 3306) which works.